Gas-producer.



PATENTED NOV. 14, 1905.

No. s045814.

E. KRENZ. GAS PRODUCER.

APPLIOATION FILED 1320.10, 1904.

N V a MMM .M

UNITED srArEs .PATENT oEEIoE.

GAS-PRODUCER.

Specification of Letters Patent.

Patented Nev. 14, 1905.

Original application iiled July 23, 1904l Serial No. 217,772. Dividedand this application filed December l0, 1904. Serial No. 236,333.

To all whom yit may concern:

Be it known that I, EDWARD KEENZ, a citiren of the United States, and aresident of St. Louis, Mlssouri, have invented certain new and usefulImprovements in Suction Gas-Producers, of which the following is aspecification, containing a full, clear, and exact description,reference being had to the accompanying' drawings, forming a parthereof.

This application is a division of my prior application filed July 23,1904, Serial No. 217,772.

My invention relates to improvements'in suction gasproducers; and itconsists of the novel features herein shown, described, and claimed.

In the drawings, Figure 1 is a vertical central section on the line 1 1of Fig. 2. Fig. 2 is a horizontal section on the line 2 2 of Fig. 1.Fig. 3 is a horizontal section on the line 3 3 of Fig. 1. Fig. 4 is asectional detail on the same line as Fig. 1, upon an enlarged scale,showing the regulation of the air-inlet, the other parts being. brokenaway to economize space.

Referring to the drawings in detail, the pedestal 5 is mountedvertically at the center of the ash-pit 6, and the imperforate fire-potbottom 7 is mounted upon the pedestal. A handle 8 is attached to thebottom of the firepot bottom and extends outwardly through the wall, tobe used in shaking the lire-pot bottom. Flanges 9 and 10 extend upwardlyfrom the {ire-pot bottom, there being openings 11 4and 12 between theends of the flanges, said openings being in transverse alinement, andthere being openings '13 and 14 leading into the ash-pit, so that whenthe handle 8 is pulled outwardly the openings 11, 12, 13, and 14 are allin alinement. Flanges 15 and 16 extend downwardly from the body of thefire-pot outside of the flanges 9 and 10, there being open-- ings 17 and18 between the ends of the iianges 15 and 16 in alinement with theopenings 13 and 14, so that when the handle 8 is shoved inwardly theflanges 15 and 16 close the openings 11 and 12 and prevent the fire andashes from falling from the fire-pot into the ash-pit.

The body 19 of the lire-pot is constructed of fire-brick, the fire-potchamber 20 being circular in plan and directly above the bottom 7. Anair-distributing chamber 21 is formed in the fire-brick near the bottomand extends entirely around the tire-pot, there being openings 22leading from the chamber into the firepot and there being an opening 23leading from the open air into the chamber. A metal casing 24 surroundsthe fire-brick and extends {ire-brick, and a top 25 closes the upper endof this casing. The air-inlet opening 23 extends through the casing 24,and a slide 26 controls the passage of air through the inlet-opening. Anopening 27 in the top 25 provides means for inserting fuel into thefire-pot, said opening being controlled by a suitable removable cover. Awater-pot 28depends from the top 25 directly above the lire-pot, and apermanently open smoke-flue 29 leads from the fire-pot upwardly throughthe water-pot to the smokestack. A steam-pipe 30 leads from the waterpot28 outwardly and downwardly and blows into the air-inlet 23. A funnel 31is mounted in position above the level of the water-pot, and a pipe 32connects said funnel to the bottom of the water-pot.` A faucet 33 isattached in the lower part of the pipe32 to provide means for drawingthe water out of 'the waterpot, and an overflow-pipe 34 is attached inthe vertical part of the pipe 32 at a point to limit the rise of thewater in the water-pot so as to prevent filling the water-pot too Vfulland so as to prevent the overflow from the waterpot passing through thepipe 30. A gas-collecting chamber 35 is formed :in the upper part of there-pot 19, there being passages 36 leading from the upper part of thefire-pot to said chamber and there being an outlet 37 leading from thechamber outwardly through the wall. 1 The generators heretofore producedhave been constructed principally for the use of anthracite coal, andthese generators could not be used with soft coal, lignite, and otherinferior fuel. It is the principal object of my invention to providemeans for using an inferior grade of coal.

In the operation of the apparatus shown and described I kindle a fireupon the fire-pot and I fill the upper part of my {ire-pot with the fuelto be used. The fire-pot bottom being imperforate, it is obvious thatonly a limited amount of air will be admitted to the fire-pot from thechamber 2l, and at the first the fire will burn slowly, graduallyreducing the fuel to a mass and tending toward coke and expelling thesmoky properties from the fuel. The smoke will be carried off throughthe flue 29, and the red-hot carbon will settle in the lower part of thefire-pot. During this time the water in the Water-pot 28 will beupwardlya considerable distance above theA bottom 7 in the lower part of thefire-pot, Y

come heated, and the steam will pass through the steam-pipe and blowinto theair-inlet 23, thus causing a mixture of air and steam to passinto the chamber 21 and from the chamber be distributed through theopenings 22 into thel lower part of the fire-pot, and this mixture ofair and steam will pass Athrough this red-hot mass and pass upwardlyinto the gas-collecting chamber 35, as indicated by the arrows in Fig.1, and by any suitable means this gas will be sucked through the outlet37 and disposed'of as desired. The mixture of steam and air will beforced into the chamber 21 by the resistance of the fuel within thefire-pot. The top of the red-hot mass of-fuel will be above thegas-chamber 35, so that the gas sucked into and out of the gas-chamberwill be pure and so that the foul gases and smoke will pass outwardlythrough the flue 29 and not contaminate the gas which is to be used. Theforce of the suction of the gas through the outlet 37 must be properlyregulated relative to the force of the draft through the pipe 29 so asto separate the smoke from the gas. If either force -is too strong, boththe pure and impure gas will be carried in the direction of the strongerforce.

If it is desired to produce gas for the operation of a gas-engine, theengine will be connected directly to the outlet-pipe 37, and as theengine operates it will secure its charges directly from the red-hotmass in the lire-pot.

In starting the-fire the amount of draft may be regulated by operatingthe handle 8 to open the openings 11 and 12, and the cinders and ashesmay be removed by inserting a draw-rod through the openings 13 and 14and through the openings 11 and 12. As the lire progresses a layer ofashes and cinders will accumulate upon the fire-top bottom and producean insulation, which will prevent the heat from being radiateddownwardly into the ash-pit.

If desired, valves may be inserted into the pipes 30 and 32, so as toincrease the pressure generated in the water-pot.

d What I claim is- 1. The improved suction gas-prod ucer, comv prising afire-pot having a steam and air distributing chamber at its bottom; afresh-fuel chamber at the top of said lire-pot; a gas-collecting chambersurrounding the top of said lire-pot; a gas-suction pipel connection inconimunication with said gas-collecting chamber; a steam-boilersuspended from its upper end within and inclosing within itself aportion of said fresh-fuel chamber; a permanently open smoke-pipepassing centrally through said boiler, and forming a smoke-passagetherein; and a steam-pipe extending from said steam-boiler and arrangedto discharge steam into said steam and air distributing chamber;substantially as specified.

2. The improved suction gas-producer, comprising a fire-pot having asteam and air distributing chamber at its bottom, a gas-collectingchamber above said fire-pot, a steam-boiler inclosing a portion of saidgas-collecting chamber,a smoke-pipe connected to said gas-collectingchamber, a steam-pipe extending from said steam-boiler and arranged todischarge'steam into said steam and air distributing chamber, thepedestal 5 mounted vertically at the center of the ash-pit beneath thesaid fire-pot, the imperforate tire-pot bottom 7 mounted upon saidpedestal, the handle 8 attached to the bottom of the fire-pot` bottom,and extending outwardly to be used in shaking said fire-pot bottom,flanges 9 and 10 extending upwardly from the fire-pot bottom, and havingtransversely-alined openings 11 and 12 between their ends, andtheash-pit having transverselyalined openings 13 and 14, substantiallyas specified.

In testimony whereof I have signed my name to this specification inpresence of two subscribing witnesses.

EDWARD KRENZ.

Witnesses:

ALFRED A. EIcKs, JOHN C. HIGDoN.

